In a significant expansion, the department will bring forward changes to require both smoke and carbon monoxide alarms to be fitted in many more homes in England than is currently the case, which will protect people and save lives.

What are the main changes for carbon monoxide alarms?

• The regulations for both privately and socially rented homes will be expanded and extended. A carbon monoxide alarm will be required in all rooms where there is a fixed combustion appliance, excluding gas cookers. This will amend Smoke and Carbon Monoxide Alarm (England) Regulations 2015. Previously in England, only privately rented homes with solid fuel burning appliances were required to have a carbon monoxide alarm. 
• There will be an obligation on both private and social sector landlords to repair or replace alarms, once informed that they are faulty.
• In all newly built homes, a carbon monoxide alarm will be required when a fixed combustion appliance, excluding gas cookers, is installed. This will amend Part J of the Building Regulations.
• The guidance on both positioning of alarms and type of carbon monoxide alarm will be reviewed and may be brought in line with BS EN 50292 and BS EN 50291. 

Alex Cunningham, MP for Stockton North and officer of the All-Party Parliamentary Carbon Monoxide Group responded to the announcement stating, “these recommendations are not before time. Around sixty people a year in England and Wales die of carbon monoxide poisoning and these expanded regulations will go some way to saving lives.”

Source